al900rr

Some of you guys know that I recently sold my beloved 3rd gen. Well that guy that bought it recently fine tuned it on the dyno and pulled 415 rwhp at 10 psi. I will post the dyno graph when he emails it to me. The motor has a very aggressive streetport done by ITO at JR Rotary who did an amazing job.

Shayde

Here is the dyno sheet from the tune.

al900rr

I want my car back Good job Shayde, to you and your tuner.

dubulup

on the verge of a little lean from 4k-5k and then 6k on?!?!

what ecu is this...seems like it could be a nicer fuel curve

al900rr

Haltech E6K. I think this was one of his first dyno runs. Think some later runs a/r's were in the 10.5-11

Shayde

Yes, it is an e6k. If I showed you the curve before I tuned, you would be amazed on how smooth it became. I'll agree its not perfectly smooth, but I couldn't argue with the spoolup time being lowered quite a bit. This was tuned by Karl Martin who races quite a bit and even helps with Ari's car. He said that he likes to have the car near 12 in those ranges. I'm not the most knowledgeable so I'm just going off of his comments.

Wargasm

Thanks for the dyno... Some interesting results comparing to some older dynos of yours I have...

from http://www.catenet.net/dyno.php

check out...

http://www.catenet.net/graph.php?car...1&SUBMIT=GRAPH

Looks like the car made the same peak power of around 415 at 10 psi as at 20 psi! Either your 14 and 20 psi maps had bad timing or fuel at high rpm, the boost was dropping and wasn't really 14 or 20... or maybe the new tune for 10 is just really good. 415 at a measly 10 psi is pretty incredible, but maybe the 12 AFR has something to do with it????

Brian

Wargasm

Looking at some other dynos of T78s... are you 100% sure that was 10 PSI and not "1.0 bar"? Just double checking because those are pretty strong numbers for only 10 PSI and I want my dyno page to be accurate.



Brian

al900rr

The 415 at 20psi was on my old mild port motor. The new pull that made 415 at 10psi was on a new aggressive street port motor from Ito

Shayde

Ya, I am positive it was at 10 psi. Actually it was 9.8 psi according to the e6k log as well as the boost guage. I'll see if the tuner saved them and I'll post some if I can. He was fairly surprised himself. We planned on tuning for 12 psi but after we finished up the fual/ignition maps and pulls for 10psi he recommended sticking with that for pump gas. He mapped the car all the way up to 17psi, but we only did runs with it at 10psi. The funny thing was that at the higher RPM's we had to richen it up to bring it below 12 afr, but it actually gained hp when we did. Not exactly sure why or how, but I guess thats the nature of the dyno.

Oh, and the tuner spent over an hour redoing the ignition maps. I guess some of them were pretty weird, like all of the maps below 1500 rpm's were blank. ???? He also made a few other changes to the idle and lower rpm maps.

$150FC

I would like to see a 17psi graph, if it's really putting 415 down at 10psi.

300tq at only 10 psi sounds a little odd though.

carx7

iTrader: (31)

That is REALLY impressive....

I've never heard of numbers like that at 10psi......

RETed

Is it just me or the original pic is really white-washed???

I adjusted it a little to show the lines a little better.



Hmmm...the AFR's are all over the place, and the transition is really abrupt at 3.1k to 3.2k RPMs.

What kinda primary / secondary fuel injector sizes?

Also, there is a lot of ignition break-up above 6.5k.


-Ted

dvls-7

Not trying to dampen your spirits or anything, but i would suggest you have your tuner get the afrs down to 11.5 or below or that motor won't last too long. Rotarys love fuel, as you stated you saw an increase when you added fuel. Plus why chance blowing the motor just to get the utmost hp #s. Those #s are impressive but you also have to make it safe....don't want to see you posting about popping that thing.

Shayde

injectors are 720/1600's


According to Karl, the transition there is when the boost actually starts kicking in. It drops to a safe afr then, but stays above before that to increase the spool rate. Again, this is from him, not myself.

As far as the ignition break up, I have the HKS twin power installed, would new coils or plugs help clear that up?

Shayde

Marshall

Wow peak tq at 7200 rpm, that IS an agressive port. That thing needs to be wound to 9k. Impressive.

Shayde

Sorry, my bad.
850 primarys
1600 secondarys

Blaine

al900rr

LOL wait till they hear about the kicker you told me. Get ready for the flames LOL

Shayde

Silencers were still in the Apexi Dual N1's

Forgot to take them out.

oops.

Blaine

Boostn7

Sorry....but these number simply don't make sense !!!
.....no matter how radical the street port.

>>>415rwh @ 9.8 psi of boost *BUT* 307rwt @ 7100-7200rpm !!!!!

Your peak torque is wayyyyyy to high in the rpm giving the indication your boost hitting target at around 4.5krpm then climbing as rpms went up.

Or....dyno was not properly set up !!!!!!

If you believe those #'s.....expect no less then ~600rwh
@ ~20psi

Congrats anyway.

JD

Judge Ito

I remember Vosko's t78 turbo pulled 416rwhp at 10psi of boost. and 459@15psi of boost.

anyway great numbers and sorry you had to sell the car Andy before you got to dyno it.. still some nice numbers congrats to the new owner..

al900rr

Marriage sucks. Shayde did all the pulls with silencers on. Should be getting higher numbers without them on. You did a great job with the motor. Car was dynoed tuned by a great tuner also.

SPOautos

Are you running the stock 3rd gen uim or a aftermarket?

STEPHEN

Marshall

I have nothing but respect for you guys but this one bugs me, those were uncorrected numbers in february and that 459 was a spike AFTER they let off the gas. It was ~430 uncorrected @ 15 psi which, with the conditions in the NE on that february day, corrected to about 390 SAE rwhp. There is no reason a 2800 lb 459 rwhp car won't break 120mph (and then some) on a dragstrip. Had to clear the air on this one...sorry

RE13REW

nice... i wish i could do it soon... my fd is sitting in my garage now... and fixing the coolant problem